/*
 * SignaBridge Internet - Professional Dark Blue Theme
 * Modern, Professional, Easy on the Eyes
 */

/* ==================== CSS VARIABLES - DARK BLUE THEME ==================== */
:root {
    --primary-blue: #1e3a8a;        /* Dark navy blue - main color */
    --dark-blue: #1e293b;           /* Very dark blue - backgrounds */
    --accent-blue: #3b82f6;         /* Medium blue - accents */
    --light-blue: #dbeafe;          /* Very light blue - backgrounds */
    --gradient-start: #1e3a8a;      /* Dark blue gradient start */
    --gradient-end: #3b82f6;        /* Medium blue gradient end */
    --success: #16a34a;             /* Forest green */
    --warning: #f59e0b;             /* Amber orange */
    --danger: #dc2626;              /* Deep red */
    --dark: #1e293b;                /* Dark slate */
    --light: #f1f5f9;               /* Soft gray */
    --white: #ffffff;               /* Pure white */
    --off-white: #f8fafc;           /* Off-white for backgrounds */
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== RESET & BASE STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ==================== KEYFRAME ANIMATIONS ==================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==================== CONTAINER ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    animation: fadeIn 0.6s ease-out;
}

/* ==================== HEADER ==================== */
header {
    background: var(--white);
    padding: 30px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--shadow-lg);
    text-align: center;
    margin-bottom: 30px;
    animation: slideInLeft 0.6s ease-out;
}

header h1 {
    font-size: 2.5em;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    font-weight: 700;
}

header .location {
    color: #64748b;
    font-size: 1em;
}

/* ==================== LOGO ==================== */
.logo-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.logo {
    max-width: 250px;
    height: auto;
    filter: drop-shadow(0 5px 15px rgba(30, 58, 138, 0.3));
    animation: float 3s ease-in-out infinite;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 8px 20px rgba(30, 58, 138, 0.5));
}

/* ==================== WELCOME SECTION ==================== */
.welcome {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px var(--shadow-lg);
    animation: fadeIn 0.8s ease-out 0.2s backwards;
}

.welcome h2 {
    color: var(--dark-blue);
    margin-bottom: 15px;
    font-size: 2em;
    font-weight: 600;
}

.welcome p {
    color: #64748b;
    font-size: 1.1em;
}

/* ==================== AD BANNER ==================== */
.ad-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: white;
    padding: 40px;
    border-radius: 20px;
    margin: 30px 0;
    text-align: center;
    box-shadow: 0 10px 30px rgba(30, 58, 138, 0.3);
    animation: fadeIn 0.8s ease-out 0.3s backwards;
}

.banner-icon {
    font-size: 4em;
    margin-bottom: 15px;
    animation: pulse 2s ease-in-out infinite;
}

.ad-banner h2 {
    font-size: 2em;
    margin-bottom: 15px;
    color: white;
    font-weight: 700;
}

.banner-subtitle {
    font-size: 1.2em;
    margin-bottom: 20px;
    opacity: 0.95;
}

.banner-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    max-width: 600px;
    margin: 20px auto;
}

.feature-box {
    background: rgba(255,255,255,0.15);
    padding: 15px;
    border-radius: 10px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-box:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2em;
}

.feature-text {
    font-size: 0.9em;
    margin-top: 5px;
}

.banner-btn {
    display: inline-block;
    background: white;
    color: var(--primary-blue);
    padding: 15px 40px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 20px;
    font-size: 1.1em;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
}

.banner-btn:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

/* ==================== PACKAGES GRID ==================== */
.packages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

/* ==================== PACKAGE CARD ==================== */
.package-card {
    background: var(--white);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px var(--shadow);
    transition: var(--transition);
    animation: fadeIn 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

.package-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.package-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px var(--shadow-lg);
}

.package-card:hover::before {
    transform: scaleX(1);
}

.package-card:nth-child(1) { animation-delay: 0.1s; }
.package-card:nth-child(2) { animation-delay: 0.2s; }
.package-card:nth-child(3) { animation-delay: 0.3s; }
.package-card:nth-child(4) { animation-delay: 0.4s; }

.package-header {
    text-align: center;
    margin-bottom: 20px;
}

.package-header h3 {
    color: var(--dark-blue);
    font-size: 1.5em;
    margin-bottom: 10px;
    font-weight: 600;
}

.price {
    font-size: 2.5em;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.package-details {
    margin: 20px 0;
}

.detail {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--light);
    transition: var(--transition);
}

.detail:hover {
    padding-left: 10px;
}

.detail:last-child {
    border-bottom: none;
}

.detail .icon {
    font-size: 1.3em;
    margin-right: 12px;
}

/* ==================== BUTTONS ==================== */
.btn-buy {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-buy::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-buy:hover::before {
    width: 300px;
    height: 300px;
}

.btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.4);
}

.btn-buy:active {
    transform: translateY(0);
}

/* ==================== MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: var(--white);
    margin: 5% auto;
    padding: 40px;
    border-radius: 20px;
    max-width: 600px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideInRight 0.4s ease-out;
}

.close {
    color: #94a3b8;
    float: right;
    font-size: 32px;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
}

.close:hover {
    color: var(--danger);
    transform: rotate(90deg);
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark-blue);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1em;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: #64748b;
    font-size: 0.9em;
}

.btn-pay {
    width: 100%;
    background: linear-gradient(135deg, var(--success) 0%, #15803d 100%);
    color: var(--white);
    padding: 18px;
    border: none;
    border-radius: 12px;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(22, 163, 74, 0.3);
}

.btn-pay:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(22, 163, 74, 0.4);
}

.btn-pay:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ==================== EMERGENCY BANNER ==================== */
.emergency-banner {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
    color: white;
    padding: 25px;
    border-radius: 20px;
    margin: 30px 0;
    text-align: center;
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.3);
    animation: fadeIn 0.8s ease-out 0.4s backwards;
}

.emergency-banner h3 {
    margin: 0 0 10px 0;
    font-size: 1.8em;
    color: white;
    font-weight: 700;
}

.emergency-banner p {
    margin: 0 0 15px 0;
    color: white;
}

.small-text {
    font-size: 0.9em;
    opacity: 0.9;
}

.emergency-btn {
    display: inline-block;
    background: white;
    color: var(--danger);
    padding: 12px 30px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.emergency-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* ==================== LINKS SECTION ==================== */
.links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.link-btn {
    display: block;
    background: var(--white);
    color: var(--dark-blue);
    padding: 20px;
    border-radius: 15px;
    text-decoration: none;
    text-align: center;
    font-weight: 600;
    font-size: 1.1em;
    transition: var(--transition);
    box-shadow: 0 5px 20px var(--shadow);
}

.link-btn:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 30px var(--shadow-lg);
}

/* ==================== GRADIENT VARIATIONS ==================== */
.purple-gradient {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%) !important;
    color: white !important;
}

.red-gradient {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%) !important;
    color: white !important;
}

.gold-gradient {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
    color: white !important;
}

.green-gradient {
    background: linear-gradient(135deg, var(--success) 0%, #15803d 100%) !important;
    color: white !important;
}

.blue-gradient {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%) !important;
    color: white !important;
}

/* ==================== DISCOUNT BOX ==================== */
.discount-box {
    display: none;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    padding: 15px;
    border-radius: 12px;
    margin: 15px 0;
    border-left: 4px solid var(--success);
}

.discount-box strong {
    color: #065f46;
    display: block;
    margin-bottom: 5px;
}

.discount-box p {
    margin: 5px 0;
    color: #065f46;
}

/* ==================== SUMMARY STYLES ==================== */
.summary {
    background: linear-gradient(135deg, var(--light-blue) 0%, #bfdbfe 100%);
    padding: 25px;
    border-radius: 15px;
    margin: 20px 0;
    text-align: center;
    box-shadow: 0 5px 15px rgba(30, 58, 138, 0.1);
}

.summary h3 {
    color: var(--dark-blue);
    margin-bottom: 10px;
    font-size: 1.5em;
}

.summary .amount {
    font-size: 1.8em;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== FOOTER ==================== */
footer {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    margin-top: 40px;
    box-shadow: 0 -5px 20px var(--shadow);
    animation: fadeIn 1s ease-out;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
    text-align: left;
}

.footer-section h4 {
    color: var(--dark-blue);
    margin-bottom: 15px;
    font-size: 1.2em;
    font-weight: 600;
}

.footer-section p {
    margin: 8px 0;
    color: #64748b;
}

.footer-section strong {
    color: var(--dark-blue);
}

.footer-bottom {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: 20px;
    border-top: 2px solid var(--light);
    margin-top: 20px;
}

.footer-bottom p {
    color: #64748b;
    margin: 10px 0;
}

footer a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

/* ==================== MESSAGES & ALERTS ==================== */
.success-message {
    background: linear-gradient(135deg, var(--success) 0%, #15803d 100%);
    color: var(--white);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    animation: slideInLeft 0.5s ease-out;
    box-shadow: 0 5px 20px rgba(22, 163, 74, 0.3);
}

.error-message {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
    color: var(--white);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    animation: pulse 0.5s ease-out;
    box-shadow: 0 5px 20px rgba(220, 38, 38, 0.3);
}

.info-message {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    animation: fadeIn 0.5s ease-out;
    box-shadow: 0 5px 20px rgba(30, 58, 138, 0.3);
}

.warning-message {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
    color: var(--white);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    animation: fadeIn 0.5s ease-out;
    box-shadow: 0 5px 20px rgba(245, 158, 11, 0.3);
}

/* ==================== LOADING SPINNER ==================== */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid var(--white);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 10px;
    vertical-align: middle;
}

/* ==================== UTILITY CLASSES ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.p-10 { padding: 10px; }
.p-20 { padding: 20px; }
.p-30 { padding: 30px; }
.fade-in { animation: fadeIn 0.6s ease-out; }
.slide-in-left { animation: slideInLeft 0.6s ease-out; }
.slide-in-right { animation: slideInRight 0.6s ease-out; }

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1024px) {
    .container { padding: 15px; }
    .packages { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
}

@media (max-width: 768px) {
    header { padding: 25px 20px; }
    header h1 { font-size: 2em; }
    .logo { max-width: 200px; }
    .welcome { padding: 30px 20px; }
    .welcome h2 { font-size: 1.6em; }
    .ad-banner { padding: 30px 20px; }
    .ad-banner h2 { font-size: 1.6em; }
    .banner-features { grid-template-columns: 1fr; }
    .packages { grid-template-columns: 1fr; }
    .links { grid-template-columns: 1fr; }
    .modal-content { margin: 10% 10px; padding: 25px; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .footer-section { text-align: center; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    header { padding: 20px 15px; }
    header h1 { font-size: 1.6em; }
    .logo { max-width: 150px; }
    .welcome { padding: 25px 15px; }
    .welcome h2 { font-size: 1.4em; }
    .ad-banner { padding: 25px 15px; }
    .package-card { padding: 20px; }
    .price { font-size: 2em; }
    .btn-buy { font-size: 1em; padding: 12px; }
    .modal-content { padding: 20px; }
}

/* ==================== SCROLLBAR STYLING ==================== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
}

/* ==================== TEXT SELECTION ==================== */
::selection {
    background: var(--primary-blue);
    color: var(--white);
}

::-moz-selection {
    background: var(--primary-blue);
    color: var(--white);
}

/* ==================== FOCUS VISIBLE ==================== */
*:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* ==================== PRINT STYLES ==================== */
@media print {
    body { background: white; }
    .modal, .btn-buy, .btn-pay, .link-btn, .banner-btn { display: none; }
    .package-card, header, footer { box-shadow: none; border: 1px solid #ddd; }
}