/* Coffee Shop Theme - Cozy & Elegant */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Lato:wght@300;400;600&display=swap');

:root {
    --coffee-dark: #3E2723;
    --coffee-medium: #6F4E37;
    --coffee-light: #A0826D;
    --cream: #FFF8DC;
    --cream-dark: #F5E6D3;
    --warm-beige: #FAF0E6;
    --espresso: #4A2511;
    --latte: #C4A57B;
    --success: #6B8E23;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lato', sans-serif;
    line-height: 1.6;
    color: var(--coffee-dark);
    background: linear-gradient(135deg, var(--cream) 0%, var(--warm-beige) 100%);
    min-height: 100vh;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
}

.hidden {
    display: none !important;
}

/* Login Screen - Coffee Shop Style */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, var(--coffee-medium) 0%, var(--espresso) 100%);
}

.login-container {
    background: var(--cream);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(62, 39, 35, 0.4);
    padding: 50px 40px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    border: 3px solid var(--latte);
}

.coffee-icon {
    font-size: 4rem;
    margin-bottom: 10px;
    animation: steam 2s ease-in-out infinite;
}

@keyframes steam {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.logo h1 {
    font-size: 3rem;
    color: var(--coffee-medium);
    margin-bottom: 5px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: lowercase;
    font-style: italic;
}

.logo p {
    color: var(--coffee-light);
    font-size: 1rem;
    margin-bottom: 30px;
    font-weight: 300;
    letter-spacing: 1px;
}

.login-form h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--coffee-dark);
    font-weight: 600;
}

.login-form p {
    color: var(--coffee-light);
    margin-bottom: 20px;
}

#pinInput {
    width: 100%;
    padding: 15px;
    font-size: 1.2rem;
    border: 2px solid var(--latte);
    border-radius: 10px;
    text-align: center;
    letter-spacing: 5px;
    margin-bottom: 20px;
    transition: all 0.3s;
    background: white;
    color: var(--coffee-dark);
}

#pinInput:focus {
    outline: none;
    border-color: var(--coffee-medium);
    box-shadow: 0 0 0 3px rgba(111, 78, 55, 0.1);
}

#loginBtn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    background: linear-gradient(135deg, var(--coffee-medium) 0%, var(--espresso) 100%);
    color: var(--cream);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    letter-spacing: 1px;
}

#loginBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(111, 78, 55, 0.4);
}

#loginBtn:active {
    transform: translateY(0);
}

.error-msg {
    color: #c0392b;
    margin-top: 15px;
    font-size: 0.9rem;
    min-height: 20px;
}

/* Course Selection */
.course-selection {
    background: var(--warm-beige);
    min-height: 100vh;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
    margin-top: 40px;
}

.course-box {
    background: white;
    border-radius: 20px;
    padding: 45px 35px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(62, 39, 35, 0.15);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.course-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--coffee-medium), var(--latte));
    transform: scaleX(0);
    transition: transform 0.4s;
}

.course-box:hover::before {
    transform: scaleX(1);
}

.course-box:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(111, 78, 55, 0.25);
    border-color: var(--latte);
}

.course-icon {
    color: var(--coffee-medium);
    margin-bottom: 25px;
}

.course-box h2 {
    font-size: 1.7rem;
    color: var(--coffee-dark);
    margin-bottom: 12px;
    font-weight: 600;
}

.course-box p {
    color: var(--coffee-light);
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.course-stats {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px solid var(--cream-dark);
}

.video-count {
    color: var(--coffee-medium);
    font-weight: 600;
    font-size: 1rem;
}

.progress-info {
    color: var(--success);
    font-size: 0.9rem;
    margin-top: 5px;
    display: block;
    font-weight: 600;
}

/* Main Content */
.main-content {
    background: var(--warm-beige);
    min-height: 100vh;
}

header {
    background: linear-gradient(135deg, white 0%, var(--cream) 100%);
    box-shadow: 0 4px 20px rgba(62, 39, 35, 0.1);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--latte);
}

/* Remove sticky header on mobile to save screen space */
@media (max-width: 768px) {
    header {
        position: relative;
    }
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.header-coffee-icon {
    font-size: 2.5rem;
    animation: steam 2s ease-in-out infinite;
}

header h1 {
    font-size: 2rem;
    color: var(--coffee-medium);
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: lowercase;
    font-style: italic;
}

.subtitle {
    color: var(--coffee-light);
    font-size: 0.9rem;
    font-weight: 300;
}

#logoutBtn {
    padding: 12px;
    background: var(--coffee-medium);
    color: var(--cream);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

#logoutBtn svg {
    width: 22px;
    height: 22px;
}

#logoutBtn .logout-text {
    display: none;
}

#logoutBtn:hover {
    background: var(--espresso);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(62, 39, 35, 0.3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.intro-section {
    background: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(62, 39, 35, 0.08);
    border-left: 5px solid var(--coffee-medium);
}

.intro-section p {
    margin-bottom: 10px;
    color: var(--coffee-dark);
    line-height: 1.8;
}

.videos-grid {
    display: grid;
    gap: 35px;
}

.section-header {
    margin-top: 30px;
}

.section-header h2 {
    color: var(--coffee-dark);
    font-size: 2rem;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--coffee-medium);
    position: relative;
    font-weight: 600;
}

.section-header h2::after {
    content: '☕';
    position: absolute;
    right: 0;
    bottom: 5px;
    font-size: 1.5rem;
}

.video-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(62, 39, 35, 0.1);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(111, 78, 55, 0.2);
    border-color: var(--latte);
}

.video-card h3 {
    color: var(--coffee-dark);
    margin-bottom: 15px;
    font-size: 1.4rem;
    font-weight: 600;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    background: var(--coffee-dark);
    box-shadow: 0 8px 20px rgba(62, 39, 35, 0.15);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

/* Fullscreen button for mobile */
.video-fullscreen-btn {
    display: none;
    margin-top: 10px;
    padding: 10px 16px;
    background: var(--coffee-medium);
    color: var(--cream);
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s;
}

.video-fullscreen-btn svg {
    width: 18px;
    height: 18px;
}

.video-fullscreen-btn:active {
    background: var(--espresso);
    transform: scale(0.98);
}

@media (max-width: 768px) {
    .video-fullscreen-btn {
        display: flex;
    }
}

/* Fullscreen mode */
.video-fullscreen-wrapper {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: #000;
}

.video-fullscreen-wrapper.active {
    display: block;
}

.video-fullscreen-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Close button for fullscreen */
.fullscreen-close-btn {
    position: fixed;
    top: 10px;
    right: 10px;
    width: 44px;
    height: 44px;
    background: rgba(111, 78, 55, 0.95);
    color: var(--cream);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.fullscreen-close-btn svg {
    width: 24px;
    height: 24px;
}

.fullscreen-close-btn:active {
    background: var(--espresso);
    transform: scale(0.95);
}

footer {
    background: var(--coffee-dark);
    color: var(--cream);
    text-align: center;
    padding: 25px;
    margin-top: 50px;
    border-top: 3px solid var(--coffee-medium);
}

footer p {
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* Video Completion Checkbox */
.video-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.video-header h3 {
    margin: 0;
    flex: 1;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 15px;
    padding: 8px 15px;
    background: var(--cream);
    border-radius: 8px;
}

.checkbox-container input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--success);
}

.checkbox-container label {
    font-size: 0.95rem;
    color: var(--coffee-dark);
    cursor: pointer;
    user-select: none;
    font-weight: 600;
}

.video-card.completed {
    border-left: 5px solid var(--success);
    background: linear-gradient(135deg, white 0%, #f0f8f0 100%);
}

.video-card.completed h3 {
    color: var(--success);
}

/* Back Button */
.back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--cream);
    color: var(--coffee-dark);
    border: 2px solid var(--latte);
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s;
    text-decoration: none;
    font-weight: 600;
}

.back-button:hover {
    background: var(--coffee-medium);
    color: var(--cream);
    border-color: var(--coffee-medium);
    transform: translateX(-5px);
}

.back-button svg {
    width: 20px;
    height: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .login-container {
        padding: 40px 25px;
    }

    .logo h1 {
        font-size: 2.5rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .video-card h3 {
        font-size: 1.2rem;
    }

    .course-box {
        padding: 35px 25px;
    }

    .header-coffee-icon {
        font-size: 2rem;
    }

    /* Icon-only back button on mobile */
    .back-button {
        padding: 12px;
        border-radius: 50%;
        width: 44px;
        height: 44px;
        justify-content: center;
        font-size: 0;
        gap: 0;
    }

    .back-button svg {
        width: 22px;
        height: 22px;
    }

    .back-button:hover {
        transform: translateX(0) scale(1.05);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 25px 15px;
    }

    .video-card {
        padding: 20px;
    }

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

    .coffee-icon {
        font-size: 3rem;
    }

    .login-form h2 {
        font-size: 1.3rem;
    }
}

/* Animation for shake (wrong PIN) */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}