/* Global Vars */
:root {
    --bg-color: #121212;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-color: #ff4500;
    /* Default Bulk */
    --accent-bg: rgba(255, 69, 0, 0.2);
}

.theme-cut {
    --accent-color: #00bcd4;
    --accent-bg: rgba(0, 188, 212, 0.2);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Tajawal', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Optimization for faster response */
html {
    scroll-behavior: auto;
    /* Faster than smooth for power users */
}

.glass-card,
.modal-content,
.workout-day-card,
.meal-card {
    will-change: transform, opacity;
    transform: translateZ(0);
    /* Hardware acceleration */
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-image: radial-gradient(circle at 10% 20%, rgba(255, 69, 0, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 90% 80%, rgba(0, 188, 212, 0.08) 0%, transparent 25%);
    background-attachment: fixed;
    /* Stops background from recalculating on scroll */
    transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* User Area Header Styles */
.user-area {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    padding: 5px 15px;
    border-radius: 20px;
    margin-right: 15px;
}

html[lang="en"] .user-area {
    margin-right: 0;
    margin-left: 15px;
}

.user-avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid var(--accent-color);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 50px;
    left: 0;
    background-color: #2d2d2d;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    z-index: 100;
    border: 1px solid var(--glass-border);
}

html[lang="ar"] .dropdown-content {
    left: 0;
}

html[lang="en"] .dropdown-content {
    right: 0;
    left: auto;
}

.dropdown-content.show {
    display: block;
}

.dropdown-content a {
    color: white;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
}

.dropdown-content a:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.9rem;
}

.text-btn:hover {
    color: white;
}

/* Profile Image Upload */
.profile-img-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

.avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-color);
    position: relative;
    cursor: pointer;
}

.avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-large .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: 0.3s;
}

.avatar-large:hover .overlay {
    opacity: 1;
}


/* App Header */
/* App Header Refactor */
.app-header {
    width: 100%;
    max-width: 900px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    flex-wrap: wrap;
    /* Allow wrapping on very small screens */
    gap: 20px;
}

.logo-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    /* Center logo text/subtitle independently if needed, 
       but inside header it might be better aligned left or center 
       depending on design. Let's keep it simple. */
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 5px;
}

.logo i {
    font-size: 2rem;
    color: var(--accent-color);
}

.logo h1 {
    font-size: 2rem;
    font-weight: 800;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* RTL Support via Flex Order or Direction */
html[lang="ar"] .app-header {
    flex-direction: row-reverse;
}

/* Remove old specific overrides */
html[lang="ar"] .header-controls,
html[lang="en"] .header-controls {
    left: auto;
    right: auto;
    flex-direction: row;
}


.lang-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: 0.3s;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hidden {
    display: none !important;
}

.container {
    width: 100%;
    max-width: 1200px;
}

.glass-card {
    background: rgba(30, 30, 30, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.card-header {
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 15px;
    margin-bottom: 20px;
    text-align: center;
}

.card-header h2 {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

input,
select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    padding: 12px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: 0.3s;
}

input:focus,
select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-bg);
}

/* Goal Toggle Styles (Dynamic Colors) */
.goal-toggle-container {
    text-align: center;
    margin: 20px 0;
}

.toggle-switch {
    position: relative;
    display: inline-flex;
    background: #000;
    border-radius: 30px;
    padding: 5px;
    margin-top: 10px;
    border: 1px solid var(--glass-border);
}

.toggle-switch input {
    display: none;
}

.toggle-option {
    padding: 10px 30px;
    cursor: pointer;
    z-index: 2;
    transition: 0.3s;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.slider {
    position: absolute;
    top: 5px;
    bottom: 5px;
    left: 5px;
    width: calc(50% - 5px);
    background: var(--accent-color);
    border-radius: 25px;
    transition: 0.3s;
    z-index: 1;
}

/* Logic for slider position and colors */
#goal-cut:checked~.slider {
    left: 50%;
    background: #00bcd4;
    /* Blue for Cut */
}

/* Text colors when active */
#goal-bulk:checked+label {
    color: white;
}

#goal-cut:checked+label {
    color: white;
}

.goal-hint {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--accent-color);
    min-height: 20px;
}

/* Buttons */
.generate-btn {
    width: 100%;
    background: linear-gradient(90deg, var(--accent-color), #ff7b00);
    border: none;
    padding: 15px;
    border-radius: 10px;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 20px;
    transition: 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.theme-cut .generate-btn {
    background: linear-gradient(90deg, #00bcd4, #00e5ff);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--accent-bg);
}

/* Results Section */
.results-container {
    width: 100%;
    max-width: 900px;
    margin-top: 40px;
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.stat-card {
    background: rgba(30, 30, 30, 0.6);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.stat-card .icon {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.stat-card .value {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    margin: 5px 0;
}

.stat-card .unit {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Tabs */
.tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 10px 25px;
    border-radius: 30px;
    cursor: pointer;
    transition: 0.3s;
    font-weight: 600;
}

.tab-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.tab-content {
    display: none;
    background: rgba(30, 30, 30, 0.6);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--glass-border);
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s;
}

.content-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 15px;
}

.content-header h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.content-header p {
    color: var(--text-secondary);
}

/* Workout Cards */
.workout-day-card,
.meal-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 4px solid var(--accent-color);
}

.day-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.schedule-list table {
    width: 100%;
    border-collapse: collapse;
}

.schedule-list th,
.schedule-list td {
    padding: 10px;
    text-align: right;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.schedule-list th {
    color: var(--text-secondary);
    font-weight: normal;
    font-size: 0.9rem;
}

html[lang="en"] .schedule-list th,
html[lang="en"] .schedule-list td {
    text-align: left;
}

.actions-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 25px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: 0.3s;
    color: white;
}

.action-btn.pdf {
    background: #e74c3c;
}

.action-btn.excel {
    background: #27ae60;
}

.action-btn.reset {
    background: #7f8c8d;
}

.action-btn:hover {
    filter: brightness(1.2);
    transform: translateY(-2px);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    /* Darker overlay */
    backdrop-filter: blur(8px);
    /* Premium blur effect */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    /* Ensure it stays above everything */
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.show {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: #0f0f0f;
    /* Pitch black for best contrast with video */
    padding: 25px;
    border-radius: 20px;
    width: 95%;
    max-width: 800px;
    /* Larger for better video viewing */
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), 0 0 20px rgba(var(--accent-rgb), 0.1);
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal.show .modal-content {
    transform: scale(1);
}

#modal-video-title {
    color: white;
    font-size: 1.2rem;
    margin-top: 15px;
    text-align: center;
    font-family: 'Tajawal', sans-serif;
}

.close-modal {
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 2rem;
    color: var(--text-secondary);
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
    z-index: 10;
}

html[lang="en"] .close-modal {
    left: auto;
    right: 15px;
}

.close-modal:hover {
    color: white;
}

/* Calculation Details */
.calc-details {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px dashed var(--accent-color);
    text-align: center;
}

.calc-details h4 {
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.details-row {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-family: monospace;
    font-size: 1.1rem;
    color: white;
}

/* Profile & Progress Styles */
.progress-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.daily-check,
.weight-tracker {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
}

.daily-check h4,
.weight-tracker h4 {
    margin-bottom: 15px;
    color: var(--accent-color);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

/* Custom Checkbox */
.custom-checkbox {
    display: block;
    position: relative;
    padding-right: 35px;
    /* RTL space */
    padding-left: 0;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 1rem;
    user-select: none;
}

html[lang="en"] .custom-checkbox {
    padding-right: 0;
    padding-left: 35px;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    right: 0;
    height: 25px;
    width: 25px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

html[lang="en"] .checkmark {
    right: auto;
    left: 0;
}

.custom-checkbox:hover input~.checkmark {
    background-color: rgba(255, 255, 255, 0.2);
}

.custom-checkbox input:checked~.checkmark {
    background-color: var(--accent-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.custom-checkbox input:checked~.checkmark:after {
    display: block;
}

.custom-checkbox .checkmark:after {
    left: 9px;
    top: 5px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

.save-btn {
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    padding: 5px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: 0.2s;
}

.save-btn:hover {
    background: var(--accent-color);
    color: white;
}

.weight-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.weight-input-group input {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
}

.weight-input-group button {
    background: var(--accent-color);
    border: none;
    color: white;
    padding: 0 15px;
    border-radius: 5px;
    cursor: pointer;
}

.history-list {
    max-height: 150px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    padding: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.9rem;
}

/* Login Modal Specifics */
.login-content {
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    text-align: center;
    max-width: 500px;
    padding: 30px;
}

.auth-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.auth-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 5px 15px;
    transition: 0.3s;
    font-weight: 600;
}

.auth-tab.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.auth-sub {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.login-input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border-radius: 8px;
    border: 1px solid var(--accent-color);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 1rem;
    text-align: center;
}

.reg-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.reg-stack .login-input {
    margin: 0;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.remember-me input {
    cursor: pointer;
    accent-color: var(--accent-color);
}

.birth-year-group {
    display: flex;
    gap: 8px;
}

.birth-year-group select {
    flex: 1;
}

.birth-year-group input {
    flex: 2;
}

.login-input.compact {
    padding: 8px;
    font-size: 0.9rem;
}

#video-frame-container {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    background: black;
    border-radius: 10px;
    margin-bottom: 15px;
}

#video-frame-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-btn {
    background: rgba(255, 69, 0, 0.2);
    color: #ff4500;
    border: 1px solid rgba(255, 69, 0, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    margin-right: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: 0.2s;
    text-decoration: none;
}

html[lang="en"] .video-btn {
    margin-right: 0;
    margin-left: 8px;
}

.video-btn:hover {
    background: #ff4500;
    color: white;
}

@media (max-width: 600px) {
    .glass-card {
        padding: 1.5rem;
    }

    .input-grid {
        grid-template-columns: 1fr;
    }

    .progress-section {
        grid-template-columns: 1fr;
    }
}

/* Phone Input Styles */
.iti {
    width: 100%;
    margin-bottom: 20px;
}

.iti__country-list {
    background-color: #1a1a1a !important;
    color: white !important;
    border: 1px solid var(--glass-border) !important;
    max-width: 320px;
    border-radius: 12px !important;
    overflow-x: hidden !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8) !important;
}

.iti__country {
    padding: 10px 15px !important;
}

.iti__country:hover {
    background-color: var(--accent-bg) !important;
}

.iti__selected-flag {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border-radius: 12px 0 0 12px;
}

html[lang="ar"] .iti__selected-flag {
    border-radius: 0 12px 12px 0;
}

.iti__search-input {
    background-color: #0b0b0b !important;
    color: white !important;
    border: 1px solid var(--glass-border) !important;
    margin: 5px !important;
    width: calc(100% - 10px) !important;
}

.iti__country-name,
.iti__dial-code {
    color: #fff !important;
    font-size: 0.9rem;
}

/* Password Strength & Validation Styles */
.password-wrapper {
    position: relative;
    width: 100%;
}

.strength-meter {
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    margin-top: -5px;
    margin-bottom: 5px;
    overflow: hidden;
}

#strength-bar {
    height: 100%;
    width: 0;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#strength-text {
    font-size: 0.85rem;
    font-weight: bold;
    display: block;
    margin-top: 5px;
    text-align: center;
}

.pass-requirements {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.req-item {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: 0.3s;
}

.req-item i {
    font-size: 0.75rem;
    opacity: 0.3;
}

.req-item.met {
    color: #00ff88;
    font-weight: bold;
}

.req-item.met i {
    color: #00ff88;
    opacity: 1;
}

.strength-weak {
    background: #ff4d4d;
    width: 25% !important;
}

.strength-good {
    background: #ffd633;
    width: 50% !important;
}

.strength-strong {
    background: #00d2ff;
    width: 75% !important;
}

.strength-excellent {
    background: #00ff88;
    width: 100% !important;
}

.login-input.match-fail {
    border-color: #ff4d4d !important;
}

.login-input.match-success {
    border-color: #00ff88 !important;
}

/* --- Premium Custom Scrollbars --- */
/* Global Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    border: 2px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Country List Dropdown Scrollbar */
.iti__country-list::-webkit-scrollbar {
    width: 6px;
}

.iti__country-list::-webkit-scrollbar-track {
    background: #1a1a1a;
}

/* Input with Icon Styles */
.input-with-icon {
    position: relative;
    flex: 2;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-color);
    cursor: pointer;
    z-index: 5;
    transition: 0.3s;
}

html[lang="ar"] .input-icon {
    left: auto;
    right: 12px;
}

.input-with-icon .login-input {
    padding-left: 40px;
}

html[lang="ar"] .input-with-icon .login-input {
    padding-left: 12px;
    padding-right: 40px;
}

/* Custom Flatpickr Theme to match GritLoom */
.flatpickr-calendar {
    background: #1a1a1a !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.8) !important;
    border-radius: 12px !important;
}

.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange,
.flatpickr-day.selected.prevMonthDay,
.flatpickr-day.selected.nextMonthDay {
    background: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
}

.flatpickr-day:hover {
    background: var(--accent-bg) !important;
}

.flatpickr-current-month .flatpickr-monthDropdown-months:hover {
    background: #222 !important;
}

.flatpickr-calendar.arrowTop:before,
.flatpickr-calendar.arrowTop:after {
    border-bottom-color: #1a1a1a !important;
}

.flatpickr-months .flatpickr-month {
    color: #fff !important;
    fill: #fff !important;
}

.flatpickr-weekday {
    color: var(--text-secondary) !important;
}

/* --- Premium Calendar Redesign (GritLoom Theme) --- */
.datepicker,
.flatpickr-calendar {
    background: #0f0f0f !important;
    border: 1px solid var(--accent-color) !important;
    border-radius: 20px !important;
    color: white !important;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 20px rgba(255, 100, 0, 0.15) !important;
    padding: 20px !important;
    backdrop-filter: blur(15px);
    z-index: 200000 !important;
    animation: calendarFade 0.3s ease-out;
}

@keyframes calendarFade {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.datepicker-dropdown {
    background: #0f0f0f !important;
    border: 1px solid var(--accent-color) !important;
    z-index: 200001 !important;
}

.datepicker-dropdown:after,
.datepicker-dropdown:before {
    display: none !important;
}

.datepicker table {
    width: 280px !important;
    border-collapse: separate !important;
    border-spacing: 5px !important;
    background: transparent !important;
}

.datepicker table tr td,
.datepicker table tr th {
    color: white !important;
    background: transparent !important;
    border-radius: 12px !important;
    border: none !important;
    transition: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-family: 'Tajawal', sans-serif;
    height: 35px !important;
    width: 35px !important;
}

.datepicker table tr td.day:hover,
.flatpickr-day:hover {
    background: var(--accent-bg) !important;
    transform: scale(1.15);
    color: white !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.datepicker table tr td.active,
.flatpickr-day.selected {
    background: var(--accent-color) !important;
    color: white !important;
    box-shadow: 0 0 20px var(--accent-color) !important;
    font-weight: bold;
}

.datepicker .datepicker-switch,
.flatpickr-current-month {
    color: var(--accent-color) !important;
    font-weight: 800 !important;
    font-size: 1.1rem !important;
}

.datepicker .prev i,
.datepicker .next i,
.flatpickr-prev-month,
.flatpickr-next-month {
    color: var(--accent-color) !important;
    transition: 0.3s;
}

.datepicker .prev:hover,
.datepicker .next:hover {
    background: rgba(255, 255, 255, 0.05) !important;
}

.datepicker table tr td.old,
.datepicker table tr td.new,
.flatpickr-day.prevMonthDay,
.flatpickr-day.nextMonthDay {
    color: rgba(255, 255, 255, 0.05) !important;
}

/* Weekday names */
.datepicker table tr th.dow,
.flatpickr-weekday {
    color: var(--accent-color) !important;
    opacity: 0.5;
    font-size: 0.75rem !important;
    text-transform: uppercase;
}

/* --- Toast Notifications (Right-Aligned) --- */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 110000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background: rgba(15, 15, 15, 0.9);
    border: 1px solid var(--accent-color);
    color: white;
    padding: 15px 25px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    font-family: 'Tajawal', sans-serif;
    font-size: 0.95rem;
    min-width: 250px;
    max-width: 350px;
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: all;
    border-left: 5px solid var(--accent-color);
}

.toast.show {
    transform: translateX(0);
}

.toast i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* --- Mobile Responsiveness Enhancements --- */
@media (max-width: 768px) {
    .app-container {
        padding: 10px;
    }

    .main-nav {
        flex-direction: column;
        gap: 10px;
    }

    .hero-section h1 {
        font-size: 1.8rem;
    }

    .auth-modal .modal-content {
        width: 95%;
        padding: 20px;
        margin: 10px;
    }

    .section-card {
        padding: 15px !important;
        margin-bottom: 20px !important;
    }

    .reg-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .birth-year-group {
        flex-direction: column;
    }

    .exercise-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .exercise-table th,
    .exercise-table td {
        padding: 8px 4px;
        font-size: 0.85rem;
    }

    #toast-container {
        right: 10px;
        left: 10px;
        top: 10px;
    }

    .toast {
        min-width: calc(100vw - 20px);
        box-sizing: border-box;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .tab-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .hero-section h1 {
        font-size: 1.6rem;
    }
}