/* =====================================================
   N2 SHOP - MODERN LOGIN - NIGHT SKY STARLIGHT
   FULL VERSION WITH ENHANCED ANIMATIONS
   ===================================================== */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-900: #111827;

    --border: var(--gray-200);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-400);

    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* =====================================================
   BASE
   ===================================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family:
        "Inter",
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(0.75rem, 3vw, 2rem);
    position: relative;
    overflow: hidden;
}

/* Floating particles background */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(
            circle at 10% 20%,
            rgba(139, 92, 246, 0.15),
            transparent 50%
        ),
        radial-gradient(
            circle at 90% 80%,
            rgba(99, 102, 241, 0.15),
            transparent 50%
        );
    animation: float 15s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

/* Enhanced Starlight Effect */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 10% 80%, white, transparent),
        radial-gradient(1px 1px at 90% 40%, white, transparent);
    background-size: 200px 200px;
    animation:
        twinkle 5s ease infinite,
        starMove 20s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-30px) scale(1.1);
    }
}

@keyframes twinkle {
    0%,
    100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

@keyframes starMove {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-200px);
    }
}

/* =====================================================
   LOGIN CONTAINER
   ===================================================== */

.login-container {
    position: relative;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: clamp(1rem, 2.5vw, 1.75rem) clamp(1rem, 2.5vw, 1.5rem);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    width: 100%;
    max-width: min(85vw, 380px);
    max-height: 95vh;
    text-align: center;
    animation:
        slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        containerFloat 6s ease-in-out infinite 0.6s;
    border: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 1;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

/* =====================================================
   CRYPTO STATUS
   ===================================================== */

.crypto-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 500;
    opacity: 0;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.crypto-status.loaded {
    color: var(--success);
    opacity: 1;
    animation: fadeInScale 0.4s ease;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.crypto-status svg {
    width: 16px;
    height: 16px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* =====================================================
   BRAND
   ===================================================== */

.brand {
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.brand-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.brand-logo {
    width: clamp(120px, 30vw, 160px);
    height: clamp(120px, 30vw, 160px);
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition);
    animation: logoPulse 3s ease-in-out infinite;
}

.brand-logo:hover {
    transform: scale(1.1) rotate(5deg);
    animation: logoSpin 0.6s ease-in-out;
}

@keyframes logoPulse {
    0%,
    100% {
        transform: scale(1);
        box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 15px -3px rgb(99 102 241 / 0.3);
    }
}

@keyframes logoSpin {
    0% {
        transform: scale(1) rotate(0deg);
    }
    50% {
        transform: scale(1.15) rotate(180deg);
    }
    100% {
        transform: scale(1.1) rotate(360deg);
    }
}

.brand-text {
    font-size: clamp(1.5rem, 5vw, 2.25rem);
    font-weight: 700;
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        var(--secondary) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

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

.brand p {
    color: var(--text-secondary);
    font-size: clamp(0.8125rem, 2vw, 0.875rem);
    font-weight: 500;
    animation: fadeIn 0.8s ease 0.3s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================================
   FORM
   ===================================================== */

.login-box {
    width: 100%;
}

.form-group {
    margin-bottom: clamp(1rem, 3vw, 1.5rem);
    text-align: left;
    animation: fadeIn 0.6s ease both;
}

.form-group:nth-child(1) {
    animation-delay: 0.4s;
}

.form-group:nth-child(2) {
    animation-delay: 0.5s;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: clamp(0.75rem, 2vw, 0.875rem);
}

.form-group label svg {
    width: 18px;
    height: 18px;
    color: var(--primary);
    stroke-width: 2.5;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    padding: clamp(0.75rem, 2vw, 1rem) 1rem clamp(0.75rem, 2vw, 1rem)
        clamp(2.75rem, 6vw, 3.25rem);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: clamp(0.875rem, 2vw, 0.9375rem);
    font-family: inherit;
    transition: all var(--transition);
    background: white;
    color: var(--text-primary);
    outline: none;
}

.input-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    animation: inputFocus 0.3s ease;
}

@keyframes inputFocus {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

.input-wrapper input::placeholder {
    color: var(--text-tertiary);
}

.input-wrapper > svg {
    position: absolute;
    left: clamp(0.875rem, 2vw, 1.125rem);
    top: 50%;
    transform: translateY(-50%);
    width: clamp(18px, 4vw, 20px);
    height: clamp(18px, 4vw, 20px);
    color: var(--text-tertiary);
    pointer-events: none;
    transition: all var(--transition);
    stroke-width: 2;
}

.input-wrapper input:focus ~ svg {
    color: var(--primary);
    animation: iconBounce 0.5s ease;
}

@keyframes iconBounce {
    0%,
    100% {
        transform: translateY(-50%) scale(1);
    }
    50% {
        transform: translateY(-50%) scale(1.2);
    }
}

/* =====================================================
   REMEMBER ME
   ===================================================== */

.remember-me-group {
    margin-bottom: clamp(1rem, 3vw, 1.5rem);
    text-align: left;
    animation: fadeIn 0.6s ease 0.6s both;
}

.remember-me-container {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: clamp(0.8125rem, 2vw, 0.875rem);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem 0;
    user-select: none;
    transition: color var(--transition);
}

.remember-me-container:hover {
    color: var(--text-primary);
}

.remember-me-container input[type="checkbox"] {
    position: relative;
    width: 20px;
    height: 20px;
    margin: 0;
    cursor: pointer;
    appearance: none;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: white;
    transition: all var(--transition);
    flex-shrink: 0;
}

.remember-me-container input[type="checkbox"]:hover {
    border-color: var(--primary);
    transform: scale(1.1);
}

.remember-me-container input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-color: var(--primary);
    animation: checkboxCheck 0.3s ease;
}

@keyframes checkboxCheck {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

.remember-me-container input[type="checkbox"]:checked::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 6px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    animation: checkmarkDraw 0.3s ease 0.1s both;
}

@keyframes checkmarkDraw {
    from {
        height: 0;
    }
    to {
        height: 10px;
    }
}

.remember-text {
    flex: 1;
    font-weight: 500;
}

.remember-duration {
    font-size: clamp(0.6875rem, 1.5vw, 0.75rem);
    color: var(--text-tertiary);
    margin-top: 0.25rem;
    padding-left: 26px;
    display: none;
}

.remember-duration.show {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================================
   BUTTON
   ===================================================== */

#loginButton {
    width: 100%;
    padding: clamp(0.875rem, 2.5vw, 1rem) clamp(1rem, 3vw, 1.5rem);
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        var(--secondary) 100%
    );
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: clamp(0.875rem, 2vw, 0.9375rem);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    margin-top: 0.5rem;
    position: relative;
    animation: fadeIn 0.6s ease 0.7s both;
    background-size: 200% 100%;
}

#loginButton:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
    background-position: 100% 0;
}

#loginButton:active {
    transform: translateY(0);
    animation: buttonPress 0.2s ease;
}

@keyframes buttonPress {
    0% {
        transform: translateY(-2px) scale(1);
    }
    50% {
        transform: translateY(1px) scale(0.98);
    }
    100% {
        transform: translateY(0) scale(1);
    }
}

#loginButton:disabled,
#loginButton.loading {
    pointer-events: none;
    opacity: 0.7;
}

#loginButton.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* =====================================================
   MESSAGES
   ===================================================== */

.error-message,
.success-message {
    padding: clamp(0.75rem, 2vw, 1rem);
    border-radius: var(--radius-md);
    margin-top: clamp(1rem, 2vw, 1.5rem);
    font-size: clamp(0.8125rem, 2vw, 0.875rem);
    font-weight: 500;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.error-message {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.success-message {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.error-message.show,
.success-message.show {
    opacity: 1;
    transform: translateY(0);
    animation: messageSlide 0.4s ease;
}

@keyframes messageSlide {
    0% {
        opacity: 0;
        transform: translateY(-20px) scale(0.9);
    }
    50% {
        transform: translateY(5px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.error-message::before,
.success-message::before {
    font-size: 1.125rem;
    flex-shrink: 0;
    animation: iconPop 0.5s ease;
}

@keyframes iconPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.3);
    }
    100% {
        transform: scale(1);
    }
}

.error-message::before {
    content: "⚠";
}

.success-message::before {
    content: "✓";
}

/* =====================================================
   FOOTER
   ===================================================== */

.login-footer {
    margin-top: clamp(1rem, 3vw, 2rem);
    padding-top: clamp(1rem, 2vw, 1.5rem);
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: clamp(0.75rem, 1.8vw, 0.8125rem);
    animation: fadeIn 0.8s ease 0.8s both;
}

.login-footer p {
    margin-bottom: 0.5rem;
}

.version-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: clamp(0.75rem, 2vw, 1rem);
}

.version-badge {
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        var(--secondary) 100%
    );
    color: white;
    padding: 0.25rem clamp(0.5rem, 2vw, 1rem);
    border-radius: var(--radius-lg);
    font-size: clamp(0.625rem, 1.5vw, 0.6875rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(99, 102, 241, 0);
    }
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-height: 600px) and (orientation: landscape) {
    body {
        padding: 0.75rem;
    }

    .login-container {
        max-width: 500px;
        padding: 1rem 1.5rem;
    }

    .brand {
        margin-bottom: 1rem;
    }

    .form-group {
        margin-bottom: 0.75rem;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Accessibility */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* iOS zoom prevention */
@supports (-webkit-touch-callout: none) {
    input {
        font-size: 16px !important;
    }
}

/* Performance */
.login-container {
    transform: translateZ(0);
    backface-visibility: hidden;
}