/* ==========================================================================
   CSS Variables & Design System (Clean, Pastel, Modern & Minimalist)
   ========================================================================== */
:root {
    /* Refined Pastel Color Palette */
    --color-bg: #f8f9fa;
    --color-bg-alt: #ffffff;
    --color-primary: #52796f;
    --color-primary-soft: #ccd5ae;
    --color-primary-dark: #354f52;
    --color-secondary: #84a59d;
    --color-accent: #e9d8a6;
    --color-sand: #faedcd;
    --color-whatsapp: #25D366;
    --color-whatsapp-hover: #20bd5a;
    
    /* Text Colors */
    --text-primary: #2b2d42;
    --text-secondary: #5c677d;
    --text-muted: #8d99ae;
    --text-accent: #52796f;

    /* Glassmorphism & Shadows */
    --glass-bg: rgba(255, 255, 255, 0.82);
    --glass-border: rgba(255, 255, 255, 0.95);
    --glass-shadow: 0 20px 40px -15px rgba(53, 79, 82, 0.12),
                    0 0 1px 1px rgba(255, 255, 255, 0.9);
    --modal-shadow: 0 25px 60px -10px rgba(43, 45, 66, 0.18),
                    0 0 1px 1px rgba(255, 255, 255, 0.9);

    /* Fonts */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Radii */
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    overflow-x: hidden;
    position: relative;
    background-image: 
        radial-gradient(at 15% 15%, rgba(204, 213, 174, 0.45) 0px, transparent 50%),
        radial-gradient(at 85% 20%, rgba(216, 226, 220, 0.5) 0px, transparent 50%),
        radial-gradient(at 50% 85%, rgba(250, 237, 205, 0.45) 0px, transparent 50%);
    background-attachment: fixed;
}

/* ==========================================================================
   Ambient Background Glows
   ========================================================================== */
.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
    animation: floatGlow 12s ease-in-out infinite alternate;
}

.glow-1 {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, #ccd5ae 0%, rgba(204, 213, 174, 0) 70%);
    top: 5%;
    left: 10%;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #d8e2dc 0%, rgba(216, 226, 220, 0) 70%);
    bottom: 5%;
    right: 8%;
    animation-delay: -4s;
}

.glow-3 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, #faedcd 0%, rgba(250, 237, 205, 0) 70%);
    top: 40%;
    right: 25%;
    animation-delay: -8s;
}

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(25px, 20px) scale(1.08); }
    100% { transform: translate(-20px, -25px) scale(0.95); }
}

/* ==========================================================================
   Main Container & Card
   ========================================================================== */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    animation: fadeInScale 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.glassmorphism {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
    padding: 44px 36px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.glassmorphism::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--color-primary-soft), var(--color-secondary), var(--color-sand));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* Badge Pill */
.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(82, 121, 111, 0.1);
    border: 1px solid rgba(82, 121, 111, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.sparkle {
    display: inline-block;
    animation: pulseSparkle 2s infinite ease-in-out;
}

@keyframes pulseSparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.9; }
    50% { transform: scale(1.25) rotate(15deg); opacity: 1; }
}

/* Greeting Section */
.greeting-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.greeting-title {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    line-height: 1.15;
    background: linear-gradient(135deg, #2b2d42 20%, #52796f 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Tooltip & Button Trigger */
.tooltip-container {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.info-btn {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: #ffffff;
    border: 1.5px solid var(--color-secondary);
    color: var(--color-primary);
    font-size: 1.15rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(82, 121, 111, 0.15);
    transition: var(--transition-bounce);
    outline: none;
}

.info-btn:hover {
    transform: translateY(-3px) scale(1.08);
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 8px 20px rgba(82, 121, 111, 0.3);
}

.pulse-ring {
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-primary);
    animation: ripple 2.2s cubic-bezier(0.1, 0.6, 0.4, 1) infinite;
    pointer-events: none;
    opacity: 0;
}

@keyframes ripple {
    0% { transform: scale(0.9); opacity: 0.7; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Tooltip on Hover */
.info-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    background: rgba(43, 45, 66, 0.92);
    backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    pointer-events: none;
    z-index: 10;
}

.info-btn:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.tooltip-hint {
    display: none;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 380px;
    margin: 0 auto 36px auto;
    font-weight: 400;
}

/* ==========================================================================
   Accept Button
   ========================================================================== */
.action-wrapper {
    margin-bottom: 28px;
    display: flex;
    justify-content: center;
}

.btn-accept {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 340px;
    padding: 18px 32px;
    font-family: var(--font-sans);
    font-size: 1.12rem;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, #25D366 0%, #1ea952 100%);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: 0 10px 25px -5px rgba(37, 211, 102, 0.45),
                0 4px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-bounce);
    overflow: hidden;
    text-decoration: none;
    user-select: none;
}

.btn-accept .btn-icon {
    font-size: 1.35rem;
    transition: transform 0.3s ease;
}

.btn-accept:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 16px 32px -4px rgba(37, 211, 102, 0.55);
}

.btn-accept:hover .btn-icon {
    transform: scale(1.2) rotate(10deg);
}

.btn-accept:active {
    transform: translateY(-1px) scale(0.99);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    transform: skewX(-25deg);
    animation: shineEffect 3.5s infinite;
}

@keyframes shineEffect {
    0%, 60% { left: -100%; }
    100% { left: 160%; }
}

/* Footer */
.card-footer {
    border-top: 1px dashed rgba(82, 121, 111, 0.2);
    padding-top: 20px;
}

.card-footer p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Modal Dialog
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(43, 45, 66, 0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.glassmorphism-modal {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    box-shadow: var(--modal-shadow);
    width: 100%;
    max-width: 460px;
    padding: 40px 32px 36px 32px;
    text-align: center;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition-bounce);
    z-index: 2;
}

.modal-overlay.active .glassmorphism-modal {
    transform: scale(1) translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(43, 45, 66, 0.06);
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.modal-close-btn:hover {
    background: rgba(82, 121, 111, 0.15);
    color: var(--color-primary-dark);
    transform: rotate(90deg);
}

.modal-icon-badge {
    width: 60px;
    height: 60px;
    margin: 0 auto 18px auto;
    background: linear-gradient(135deg, var(--color-primary-soft), var(--color-sand));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-dark);
    font-size: 1.5rem;
    box-shadow: 0 6px 16px rgba(82, 121, 111, 0.15);
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.65rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.modal-body {
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 24px 22px;
    border: 1px solid rgba(82, 121, 111, 0.15);
    margin-bottom: 26px;
}

.quote-symbol {
    position: absolute;
    top: -10px;
    left: 18px;
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1;
    color: var(--color-secondary);
    opacity: 0.4;
    user-select: none;
}

.modal-message {
    font-size: 1.02rem;
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.modal-message strong {
    color: var(--color-primary-dark);
    font-weight: 700;
    background: rgba(82, 121, 111, 0.12);
    padding: 2px 6px;
    border-radius: 4px;
}

.modal-signature {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    margin-top: 14px;
}

.signature-line {
    width: 50px;
    height: 2px;
    background: var(--color-secondary);
    margin-bottom: 8px;
    opacity: 0.5;
}

.signature-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.author-name {
    font-family: var(--font-heading);
    font-size: 1.12rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

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

.btn-modal-accept {
    width: 100%;
    padding: 14px 24px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, #25D366 0%, #1ea952 100%);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.35);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-bounce);
}

.btn-modal-accept:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(37, 211, 102, 0.45);
}

/* ==========================================================================
   Keyframe Animations
   ========================================================================== */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(18px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 480px) {
    .glassmorphism {
        padding: 32px 20px;
    }
    
    .greeting-title {
        font-size: 2.2rem;
    }

    .info-btn {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }

    .subtitle {
        font-size: 0.95rem;
        margin-bottom: 28px;
    }

    .btn-accept {
        padding: 16px 24px;
        font-size: 1.05rem;
    }

    .glassmorphism-modal {
        padding: 32px 20px 24px 20px;
    }

    .modal-title {
        font-size: 1.45rem;
    }

    .modal-message {
        font-size: 0.95rem;
    }
}