/* ===================================================
   ❤️ ROMANTIC BIRTHDAY SURPRISE THEME ❤️
   =================================================== */

:root {
    --primary: #ff4f81;
    --primary-hover: #e63e70;
    --primary-gradient: linear-gradient(135deg, #ff4f81, #ff758c);
    --secondary-gradient: linear-gradient(135deg, #ff758c 0%, #ff7eb3 50%, #fd868c 100%);
    --card-bg: rgba(255, 255, 255, 0.94);
    --card-border: rgba(255, 255, 255, 0.8);
    --text-dark: #2d1822;
    --text-muted: #6e5863;
    --shadow-soft: 0 15px 35px rgba(255, 79, 129, 0.2), 0 5px 15px rgba(0, 0, 0, 0.08);
    --shadow-modal: 0 25px 60px rgba(0, 0, 0, 0.4);
    --font-main: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-script: 'Dancing Script', cursive;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
    -webkit-tap-highlight-color: transparent;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #ff758c, #ff7eb3, #ffd1dc);
    background-size: 300% 300%;
    animation: gradientShift 12s ease infinite;
    overflow-x: hidden;
    position: relative;
    padding: max(16px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
    color: var(--text-dark);
}

button, input, select, textarea, .toggle-eye, .modal-close {
    touch-action: manipulation;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ===================================================
   FLOATING HEARTS IN BACKGROUND
   =================================================== */
.hearts-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.floating-heart {
    position: absolute;
    bottom: -40px;
    font-size: 24px;
    animation: floatUp linear infinite;
    opacity: 0.6;
    filter: drop-shadow(0 2px 5px rgba(255, 105, 180, 0.4));
    user-select: none;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) rotate(0deg) scale(0.8);
        opacity: 0;
    }
    15% {
        opacity: 0.75;
    }
    85% {
        opacity: 0.75;
    }
    100% {
        transform: translateY(-110vh) rotate(360deg) scale(1.2);
        opacity: 0;
    }
}

/* ===================================================
   MAIN LAYOUT & CARDS
   =================================================== */
.main-wrapper {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 580px;
    display: flex;
    justify-content: center;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1.5px solid var(--card-border);
    border-radius: 28px;
    padding: 40px 32px;
    box-shadow: var(--shadow-soft);
    text-align: center;
    width: 100%;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ===================================================
   LOGIN SECTION
   =================================================== */
.login-box {
    max-width: 420px;
    margin: 0 auto;
}

.badge-icon {
    font-size: 52px;
    margin-bottom: 10px;
    display: inline-block;
    animation: bounce 2.2s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.romantic-title {
    font-size: 2.2rem;
    font-family: var(--font-script);
    color: var(--primary);
    margin-bottom: 6px;
    font-weight: 700;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.form-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    font-size: 1.1rem;
    color: #999;
    pointer-events: none;
}

.input-container input {
    width: 100%;
    min-height: 48px;
    padding: 12px 48px 12px 44px;
    border: 2px solid #ffccd9;
    background: #fff;
    border-radius: 14px;
    font-size: 16px; /* Android Chrome auto-zoom fix */
    color: var(--text-dark);
    outline: none;
    transition: all 0.25s ease;
}

.input-container input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 79, 129, 0.15);
}

.toggle-eye {
    position: absolute;
    right: 4px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: #888;
    transition: transform 0.2s;
    user-select: none;
    -webkit-user-select: none;
}

.toggle-eye:hover {
    transform: scale(1.15);
}

.btn-primary {
    width: 100%;
    min-height: 50px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 14px;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    box-shadow: 0 8px 20px rgba(255, 79, 129, 0.35);
    transition: all 0.25s ease;
    user-select: none;
    -webkit-user-select: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(255, 79, 129, 0.45);
}

.btn-primary:active {
    transform: scale(0.98);
}

.status-message {
    min-height: 24px;
    margin-top: 14px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.status-message.error {
    color: #d81b60;
}

.status-message.success {
    color: #2e7d32;
}

.hint-box {
    margin-top: 18px;
    padding: 10px 14px;
    background: rgba(255, 240, 245, 0.8);
    border-radius: 12px;
    border: 1px dashed #ff99bb;
    font-size: 0.85rem;
    color: #c2185b;
    animation: fadeInScale 0.35s ease-out;
}

/* Shake animation for wrong password */
.shake {
    animation: shakeAnim 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shakeAnim {
    10%, 90% { transform: translate3d(-3px, 0, 0); }
    20%, 80% { transform: translate3d(5px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-6px, 0, 0); }
    40%, 60% { transform: translate3d(6px, 0, 0); }
}

/* ===================================================
   BIRTHDAY CELEBRATION SECTION
   =================================================== */
.birthday-page {
    max-width: 580px;
    padding: 45px 36px;
    animation: fadeInScale 0.6s ease forwards;
}

.celebration-badge {
    display: inline-block;
    background: #ffe3ec;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.celebration-title {
    font-size: 2.6rem;
    font-family: var(--font-script);
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 6px;
    text-shadow: 1px 2px 4px rgba(255, 79, 129, 0.2);
}

.princess-tag {
    font-size: 1.15rem;
    color: #b83260;
    font-weight: 600;
    margin-bottom: 24px;
}

.letter-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(255, 200, 215, 0.6);
    border-radius: 20px;
    padding: 28px 24px;
    text-align: left;
    box-shadow: inset 0 2px 6px rgba(255, 79, 129, 0.05);
    margin-bottom: 26px;
    position: relative;
}

.letter-card::before {
    content: "“";
    position: absolute;
    top: 6px;
    left: 14px;
    font-family: serif;
    font-size: 60px;
    color: rgba(255, 79, 129, 0.15);
    line-height: 1;
}

.letter-salutation {
    font-family: var(--font-script);
    font-size: 1.6rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 14px;
}

.letter-body {
    font-size: 0.98rem;
    line-height: 1.75;
    color: #4a343e;
    margin-bottom: 16px;
}

.letter-closing {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-dark);
    margin-top: 10px;
    border-top: 1px dashed rgba(255, 120, 160, 0.3);
    padding-top: 14px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-romantic {
    background: linear-gradient(135deg, #ff4f81, #ff2e63);
    color: white;
    border: none;
    min-height: 48px;
    padding: 14px 22px;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(255, 46, 99, 0.35);
    transition: all 0.25s;
    user-select: none;
    -webkit-user-select: none;
}

.btn-romantic:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(255, 46, 99, 0.45);
}

.btn-romantic:active {
    transform: scale(0.98);
}

.btn-play-music {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary);
    min-height: 48px;
    padding: 12px 22px;
    border-radius: 14px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    user-select: none;
    -webkit-user-select: none;
}

.btn-play-music:hover {
    background: #fff0f5;
    transform: translateY(-2px);
}

.btn-play-music:active {
    transform: scale(0.98);
}

.btn-outline {
    background: transparent;
    color: var(--text-muted);
    border: 1px dashed #d8a0b0;
    min-height: 44px;
    padding: 10px 18px;
    border-radius: 12px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.5);
    color: var(--text-dark);
}

/* ===================================================
   VIDEO POPUP MODAL (FOR INCORRECT PASSWORD)
   =================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background: rgba(18, 5, 12, 0.82);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
    opacity: 1;
    transition: opacity 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-card {
    background: #ffffff;
    width: 100%;
    max-width: 460px;
    max-height: 92vh;
    max-height: 92dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    border-radius: 24px;
    padding: 26px 20px 20px;
    box-shadow: var(--shadow-modal);
    position: relative;
    animation: modalScaleUp 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    text-align: center;
    margin: auto;
}

@keyframes modalScaleUp {
    0% {
        transform: scale(0.75);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 12px;
    background: #f3f3f3;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: #555;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
}

.modal-close:hover {
    background: var(--primary);
    color: white;
    transform: rotate(90deg);
}

.modal-header {
    margin-bottom: 14px;
    padding-right: 32px;
}

.modal-icon {
    font-size: 38px;
    margin-bottom: 6px;
}

.modal-header h2 {
    font-size: 1.35rem;
    color: #d81b60;
    margin-bottom: 6px;
}

.modal-header p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.video-container {
    width: 100%;
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 16px;
    position: relative;
    aspect-ratio: 16 / 9;
}

.video-container video {
    width: 100%;
    height: 100%;
    max-height: 48vh;
    max-height: 48dvh;
    display: block;
    object-fit: contain;
    outline: none;
    background: #000;
}

.modal-footer {
    display: flex;
    justify-content: center;
}

.btn-try-again {
    background: var(--primary-gradient);
    color: white;
    border: none;
    min-height: 48px;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    box-shadow: 0 6px 18px rgba(255, 79, 129, 0.35);
    user-select: none;
    -webkit-user-select: none;
}

.btn-try-again:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(255, 79, 129, 0.45);
}

.btn-try-again:active {
    transform: scale(0.98);
}

/* ===================================================
   CONFETTI CANVAS
   =================================================== */
.confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* Utility classes */
.hidden {
    display: none !important;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.92);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   =================================================== */
@media (max-width: 480px) {
    body {
        padding: 12px 10px 18px;
    }

    .card {
        padding: 26px 18px;
        border-radius: 22px;
    }

    .romantic-title {
        font-size: 1.85rem;
    }

    .subtitle {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }

    .celebration-badge {
        font-size: 0.78rem;
        padding: 5px 14px;
    }

    .celebration-title {
        font-size: 2.05rem;
        line-height: 1.2;
    }

    .princess-tag {
        font-size: 1.02rem;
        margin-bottom: 18px;
    }

    .letter-card {
        padding: 20px 15px;
        margin-bottom: 20px;
        border-radius: 16px;
    }

    .letter-salutation {
        font-size: 1.4rem;
        margin-bottom: 10px;
    }

    .letter-body {
        font-size: 0.92rem;
        line-height: 1.68;
        margin-bottom: 12px;
    }

    .letter-closing {
        font-size: 0.98rem;
    }

    .modal-card {
        padding: 22px 14px 16px;
        border-radius: 20px;
        max-height: 94vh;
        max-height: 94dvh;
    }

    .modal-header h2 {
        font-size: 1.25rem;
    }

    .modal-header p {
        font-size: 0.85rem;
    }

    .video-container video {
        max-height: 42vh;
        max-height: 42dvh;
    }

    .btn-romantic, .btn-primary, .btn-play-music, .btn-try-again {
        padding: 13px 18px;
        font-size: 0.95rem;
    }
}

@media (max-width: 360px) {
    .card {
        padding: 22px 14px;
        border-radius: 18px;
    }

    .romantic-title {
        font-size: 1.65rem;
    }

    .celebration-title {
        font-size: 1.8rem;
    }

    .letter-body {
        font-size: 0.88rem;
    }
}